package com.li.utils;
 
import java.io.InputStream;
import java.io.Writer;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;

import com.li.message.resp.RespArticle;
import com.li.message.resp.RespBaseMessage;
import com.li.message.resp.RespMusicMessage;
import com.li.message.resp.RespNewsMessage;
import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.core.util.QuickWriter;
import com.thoughtworks.xstream.io.HierarchicalStreamWriter;
import com.thoughtworks.xstream.io.xml.PrettyPrintWriter;
import com.thoughtworks.xstream.io.xml.XppDriver;

/**
 * 消息工具类
 * 
 * @author liandyao
 * @date 2016年1月22日
 * @version 1.01 2016年12月17日 修改reflectMessage
 */
public class MessageUtil {
	
	/**
	 * 返回消息类型：文本
	 */
	public static final String RESP_MESSAGE_TYPE_TEXT = "text";

	/**
	 * 返回消息类型：音乐
	 */
	public static final String RESP_MESSAGE_TYPE_MUSIC = "music";

	/**
	 * 返回消息类型：图文
	 */
	public static final String RESP_MESSAGE_TYPE_NEWS = "news";

	/**
	 * 请求消息类型：文本
	 */
	public static final String REQ_MESSAGE_TYPE_TEXT = "text";

	/**
	 * 请求消息类型：图片
	 */
	public static final String REQ_MESSAGE_TYPE_IMAGE = "image";

	/**
	 * 请求消息类型：链接
	 */
	public static final String REQ_MESSAGE_TYPE_LINK = "link";

	/**
	 * 请求消息类型：地理位置
	 */
	public static final String REQ_MESSAGE_TYPE_LOCATION = "location";

	/**
	 * 请求消息类型：音频
	 */
	public static final String REQ_MESSAGE_TYPE_VOICE = "voice";

	/**
	 * 请求消息类型：推送
	 */
	public static final String REQ_MESSAGE_TYPE_EVENT = "event";

	/**
	 * 事件类型：subscribe(订阅)
	 */
	public static final String EVENT_TYPE_SUBSCRIBE = "subscribe";

	/**
	 * 事件类型：unsubscribe(取消订阅)
	 */
	public static final String EVENT_TYPE_UNSUBSCRIBE = "unsubscribe";

	/**
	 * 事件类型：CLICK(自定义菜单点击事件)
	 */
	public static final String EVENT_TYPE_CLICK = "CLICK";

	/**
	 * 解析微信发来的请求（XML）
	 * 
	 * @param request
	 * @return
	 * @throws Exception
	 */
	@SuppressWarnings("unchecked")
	public static Map<String, String> parseXml(InputStream inputStream) throws Exception {
		// 将解析结果存储在HashMap中
		Map<String, String> map = new HashMap<String, String>();

		// 从request中取得输入流
		//InputStream inputStream = request.getInputStream();
		// 读取输入流 
		Document document = new SAXReader().read(inputStream);
		// 得到xml根元素
		Element root = document.getRootElement();
		// 得到根元素的所有子节点
		List<Element> elementList = root.elements();

		// 遍历所有子节点
		for (Element e : elementList)
			map.put(e.getName(), e.getText());

		// 释放资源
		inputStream.close();
		inputStream = null;

		return map;
	}

	/**
	 * 文本消息对象转换成xml
	 * 
	 * @param textMessage 文本消息对象
	 * @return xml
	 */
	public static String textMessageToXml(RespBaseMessage baseMessage) {
		xstream.alias("xml", baseMessage.getClass());
		return xstream.toXML(baseMessage);
	}

	/**
	 * 音乐消息对象转换成xml
	 * 
	 * @param musicMessage 音乐消息对象
	 * @return xml
	 */
	public static String musicMessageToXml(RespMusicMessage musicMessage) {
		xstream.alias("xml", musicMessage.getClass());
		return xstream.toXML(musicMessage);
	}

	/**
	 * 图文消息对象转换成xml
	 * 
	 * @param newsMessage 图文消息对象
	 * @return xml
	 */
	public static String newsMessageToXml(RespNewsMessage newsMessage) {
		xstream.alias("xml", newsMessage.getClass());
		xstream.alias("item", new RespArticle().getClass());
		return xstream.toXML(newsMessage);
	}

	/**
	 * 扩展xstream，使其支持CDATA块
	 * 
	 * @date 2013-05-19
	 */
	private static XStream xstream = new XStream(new XppDriver() {
		public HierarchicalStreamWriter createWriter(Writer out) {
			return new PrettyPrintWriter(out) {
				// 对所有xml节点的转换都增加CDATA标记
				boolean cdata = true;

				@SuppressWarnings("unchecked")
				public void startNode(String name, Class clazz) {
					//去掉xml的标记
					if(!"xml".equals(name) && !"item".equals(name)){ 
						//为了符合微信的xml规范，首字母必须大写，而java的规范是首字母小写。
						//所以这里必须要将小写字母转为大写字母
						name = firstUpp(name) ;
					}
					super.startNode(name, clazz);
				}

				protected void writeText(QuickWriter writer, String text) {
					if (cdata) {
						writer.write("<![CDATA[");
						writer.write(text);
						writer.write("]]>");
					} else {
						writer.write(text);
					}
				}
			};
		}
	});
	
	
	/** 
	 * 判断是否是QQ表情 
	 *  
	 * @param content 
	 * @return 
	 */  
	public static boolean isQqFace(String content) {  
	    boolean result = false;  
	  
	    // 判断QQ表情的正则表达式  
	    String qqfaceRegex = "/::\\)|/::~|/::B|/::\\||/:8-\\)|/::<|/::$|/::X|/::Z|/::'\\(|/::-\\||/::@|/::P|/::D|/::O|/::\\(|/::\\+|/:--b|/::Q|/::T|/:,@P|/:,@-D|/::d|/:,@o|/::g|/:\\|-\\)|/::!|/::L|/::>|/::,@|/:,@f|/::-S|/:\\?|/:,@x|/:,@@|/::8|/:,@!|/:!!!|/:xx|/:bye|/:wipe|/:dig|/:handclap|/:&-\\(|/:B-\\)|/:<@|/:@>|/::-O|/:>-\\||/:P-\\(|/::'\\||/:X-\\)|/::\\*|/:@x|/:8\\*|/:pd|/:<W>|/:beer|/:basketb|/:oo|/:coffee|/:eat|/:pig|/:rose|/:fade|/:showlove|/:heart|/:break|/:cake|/:li|/:bome|/:kn|/:footb|/:ladybug|/:shit|/:moon|/:sun|/:gift|/:hug|/:strong|/:weak|/:share|/:v|/:@\\)|/:jj|/:@@|/:bad|/:lvu|/:no|/:ok|/:love|/:<L>|/:jump|/:shake|/:<O>|/:circle|/:kotow|/:turn|/:skip|/:oY|/:#-0|/:hiphot|/:kiss|/:<&|/:&>";  
	    Pattern p = Pattern.compile(qqfaceRegex);  
	    Matcher m = p.matcher(content);  
	    if (m.matches()) {  
	        result = true;  
	    }  
	    return result;  
	}  
	
	/** 
	 * emoji表情转换(hex -> utf-16) 
	 *  
	 * @param hexEmoji 
	 * @return 
	 */  
	public static String emoji(int hexEmoji) {  
	    return String.valueOf(Character.toChars(hexEmoji));  
	} 
	
	 
    
    /**
     * 将首字母大写
     * @param name
     * @return
     */
    public static String firstUpp(String name){
    	if(name==null || "".equals(name)) return name ;
    	char first = name.charAt(0) ;
    	String newName = Character.toUpperCase(first)+name.substring(1) ;
    	return newName ;
    }
    
    /**
     * 通过反射来封装对象
     * @param <T> 传入的对象泛型
     * @param map
     * @throws Exception
     * 2016年12月17日 修改成泛型的方法
     */
    public static <T> void reflectMessage(T t,Map<String,String> map) throws Exception{
    	if(t==null || map==null) return ;
    	Class cls = t.getClass() ;
    	Field[] fields = cls.getDeclaredFields() ;
    	for (int i = 0; i < fields.length; i++) {
			Field f = fields[i] ;
			String name = f.getName(); 
			name = firstUpp(name) ;//首字母大写
			String value = map.get(name) ;
			if(value==null) continue ;
			Method m = cls.getMethod("set"+name, String.class);
			m.invoke(t, value) ;
		}
    	
    }
}
